Vortex VTS-N OK-N Engine (CIK-FIA)

Description

Vortex VTS-N — 125cc single-cylinder reed-valve two-stroke, liquid-cooled with external pump. Homologation 012-EN-11, the first Vortex engine designed for the OK-N regulations, the FIA Karting category for national championships from 2023. Same shape as the VTS (104 mm connecting rod, same exhaust type) but, per CIK-FIA rules, without exhaust valve and with a 15,000 rpm limiter; renewed cylinder and barrel design for low running costs and high performance. Can also be used in OKJ-N with a narrow-section exhaust manifold.

Technical specifications

• 125cc
• Bore x stroke 54×54 mm (square)
• Roller main bearings
• Cylinder with fully machined cast-iron dry liner
• 5/3 transfers
• Crankcase reed-valve intake
• Selettra ignition CIK-FIA homologated 034-IG-30
• Max 15
• 000 rpm (rev limiter).

Supplied with

• Roller bearings
• Selettra ignition and coil
• Spark plug and cap

Exhaust, carburettor and engine mount not supplied.